Units 2 and 3 Vocab Review

Front

What is the term for the positively charged center of an atom?

Back

Nucleus

Front

What phenomenon occurs when electrons are emitted from a metal’s surface when light of a certain frequency shines on it?

Back

Photoelectric effect

Front

What is the shortest distance between equivalent points on a continuous wave?

Back

Wavelength

Front

How is the atomic mass of an element calculated?

Back

By averaging the mass numbers of all isotopes.

Front

Which statement is true about electrons?

Back

Electrons have almost no mass.

Front

What is the charge of a proton?

Back

Positive charge.

Front

What is the charge of a neutron?

Back

No charge (neutral).

Front

What is the charge of an electron?

Back

Negative charge.

Front

What is the relationship between wavelength and frequency?

Back

They are inversely related; as wavelength increases, frequency decreases.

Front

What is the principle behind the photoelectric effect?

Back

Light can cause the emission of electrons from a material.